Feeding device for pulpy masses in the form of a cell pump, particularly for sausage filling machines

ABSTRACT

A feeding device for pulpy masses of the type of a bucket pump with radially guided feeding wings disposed in an eccentric rotor, which comprises a pump housing having a wall. A radially movable control disc subjected to pressure and determining the position of the feeding wings. The control disc has a guiding groove. A guide bolt and a spring-biased spring bolt extend into the guiding groove. The spring-biased spring bolt supports itself on the control disc by means of an oblique deviation face, and means are provided in the pump housing for setting from the outside a radial pressure effective on the control disc by means of the spring bolt.

[72] Inventor Johannes Muller Biberach am Riss, Germany [21] Appl. No.35,812 [22] Filed May 8, 1970 [45] Patented Jan. 4, 1972 [73] AssigneeFirma Albert Handtmann, Metallgiesserei Biberach am Riss, Germany [54]FEEDING DEVICE FOR PULPY MASSES IN THE FORM OF A CELL PUMP, PARTICULARLYFOR SAUSAGE FILLING MACHINES 3 Claims, 3 Drawing Figs.

[52] US. Cl 17/37 [51] Int. Cl A22c 11/08 [50] Field of Search 17/37,35, 32

[5 6] References Cited UNITED STATES PATENTS 475,367 5/1892 Wassermann17/37 2,837,762 6/1958 Azzinietal. 3,543,330 12/1970 Muller PrimaryExaminer-Lucie H. Laudenslager Attorney-Ernest G. Montague ABSTRACT: Afeeding device for pulpy masses of the type of a bucket pump withradially guided feeding wings disposed in an eccentric rotor, whichcomprises a pump housing having a wall. A radially movable control discsubjected to pressure and determining the position of the feeding wings.The control disc has a guiding groove. A guide bolt and a spring-biasedspring bolt extend into the guiding groove. The spring-biased springbolt supports itself on the control disc by means of an obliquedeviation face, and means are provided in the pump housing for settingfrom the outside a radial pressure effective on the control disc bymeans of the spring bolt.

PATENTEU JAN 4 I972 SHEET 1 OF 2 In venfor g l PATENTED JAN 419723531.565

sum 2 [1F 2 FEEDING DEVICE FOR PULPY MASSES IN THE FORM OF A CELL PUMP,PARTICULARLY FOR SAUSAGE FILLING MACHINES The present invention relatesto a feeding device for pulpy masses of the type of a bucket pump,particularly for sausage filling machines, in general, and to suchfeeding device with radially guided feeding wings disposed in aneccentric rotor, the position of the feeding wings being determined by aradially movable controldisc and subjected to pressure, which controldisc is equipped with a guide groove, into which a guide bolt and aspring bolt charged by a spring pressure extends, which spring boltsupports itself on a control disc by means of an oblique face, inparticular.

The occurring radial forces of the feeding wings are assumed by theguide bolt, so that they cannot influence any more the position of thecontrol disc, whereby improvements concerning the effect are obtained.Furthermore, the forced guide of the guide bolt brings about, that thedisplacement force exerted by spring pressure to the control discextends with safety only in the direction required for the function ofthe pump, namely against the wings to be pressed on.

Since also the spring bolt, as well as the guide bolts are equipped withflattened portions, it supports itself likewise in a guide groove, sothat it participates on the assumption of pressure and guidance of thecontrol disc.

It has been shown, however, that the pressing of the pump wings againstthe housing wall with about constant spring pressure, depending upon theprevailing circumstances, in particular concerning the characteristicsof the feeding medium, does not result always in the desired favorableratio between density effect and friction, so that the feeding devicestill requires in this direction an improvement.

In the copending Pat. application Ser. No. 726,815, filed May 6, 1968,now Pat. No. 3,543,330, issued Dec. 1, 1970 a feeding device for pulpymasses of the type of a bucket pump is disclosed, wherein in the housingchamber of the pump, a joint receiving element is centrally inserted, onwhich the feeding wings support themselves in radial direction. By thisarrangement, a nonobjectionable sealing wing of the feeding wingsrelative to the housing wall is obtained and the unavoidable wear of thewings of the housing wall is compensated for, whereby thedisadvantageous occurrences are removed and the production issimplified.

Within a further development of the structure disclosed in saidcopending patent application, a device, for example a screw, is disposedin the housing with which a radial pressure can be set from the outsideeffective on the control disc by means of the spring bolt. By thisarrangement, it is possible to dosage the engagement pressure of thepump wing such, that the friction between the wing edge and the housingis reduced to a minimum, whereby, however, the required sealing effectcan still be maintained.

Since the axis of the spring bolt extends parallel to the axis of therotor, it is of advantage for structural reasons to transmit, inaccordance with the present invention, the force of the adjustment screwover an oblique deflection face onto the spring bolt, whereby a pressurespring is inserted into the force path which charges the control disc inradial direction.

Since the adjustability of the pressure force can be finally stepped upin case of a suitable design of the screw, in accordance with thevariation of the present invention, the arrangement can be made such,that the pressure spring supports itself on the housing and serves forthe following of the spring bolt only upon release of the screw, so thatthe pressure force of the screw is effective directly upon the controldisc. By this arrangement, in an advantageous manner, a more exactadjustment on the engagement pressure is obtainable to the operatingconditions, in particular because the indifferent effect of the springis excluded, so that the actual engagement pressure on the adjustmentscrew is more clearly recognizable.

With these and other objects in view, which will become apparent in thefollowing detailed description, the present invention, which isdisclosed by example only, will be clearly understood in connection withthe accompanying drawings, in which:

- an enlarged scale; and

FIG. 3 is another embodiment of the structure disclosed in FIG. 2.

Referring now to the drawings, the present invention includessubstantially the same or similar elements disclosed in the copendingUS. Pat. application Ser. No. 726,815 now US. Pat. No. 3,543,330 of theinventor. As clearly shown in FIG 1, the four feeding wings 41a, 41b,41c and 41d support themselves on the inner wall of the pump housing 42,and in addition on a control disc 43. The other wings indicated inpoint-dotted lines move with slight play between their guide faces, sothat the actual friction points are limited to the wings 41a to 41d.

The control disc 43 is equipped with a radial groove 45, into which theguide bolt 46 having flattened portions 47 projects. This guide bolt 46is secured in the pump cover 48 and serves for guidance of the radiallymovable control disc 43, as well as for reception of the pressure forcestransmitted from the feeding wings and indicated in FIG. 1 by arrows.

The permanent pressure force is exerted upon the control disc 43 bymeans of a spring bolt 60 guided in the cover 48, the flattened portion51 of the spring bolt 60 projecting likewise into the guide groove 45.

The spring bolt 60 supports itself over an oblique deviation face 52 onthe control disc 43 and is continuously charged by a spring 61 in thearrangement disclosed in FIG. 2. The spring 61 supports itself on apressure member 62 likewise guided in the cover 48, which pressuremember 62 is in forced connection with the adjustment screw 65 by meansof an oblique deviation face 63 and an intermediate member 64.

The screw 65 is operable in the pump cover 48 or in another housing partand makes it possible to exert on the control disc 43, an adjustable,resilient force pressing the wings 41a, 41b, 41c and 41d onto thehousing.

Referring now again to the drawings, and in particular to FIG. 3, thearrangement differs from that of FIG. 2 substantially by the fact thatthe pressure spring 66, engaging the pressure member 62, does notsupport itself on the pressure member 62, rather on the housing cover48. By this arrangement, the pressure of the adjustment screw 65 iseffective by means of the members 64, 62 and 60 directly on the controldisc 43. The spring 66 serves here only for the following of the members62 and 64, if the screw is rotated in the releasing direction.

While I have disclosed several embodiments of the present invention, itis to be understood that these embodiments are given by example only andnot in a limiting sense.

I claim:

1. A feeding device for pulpy masses of the type of a bucket pump withradially guided feeding wings disposed in an eccentric rotor, comprisinga pump housing having a wall,

a radially movable control disc subjected to pressure and determiningthe position of said feeding wings,

said control disc has a guiding groove,

a guide bolt and spring-biased spring bolt extending intosaid guidinggroove,

said spring-biased spring bolt supporting itself on said control disc bymeans of an oblique deviation face, and

means, provided in said pump housing, for setting from the outside aradial pressure effective on said control disc by means of said springbolt.

2. The feeding device, as set forth in claim 1, which includes means fortransmitting the force of a setscrew onto said spring bolt by means ofan oblique deviation face, and

a pressure spring is inserted into the path of said force and loadingsaid control disc in radial direction.

3. The feeding device, as set forth in claim 2, wherein said pressurespring supports itself on said pump housing, and serves for adjusting ofsaid spring bolt upon release of said pressure setting means.

1. A feeding device for pulpy masses of the type of a bucket pump withradially guided feeding wings disposed in an eccentric rotor, comprisinga pump housing having a wall, a radially movable control disc subjectedto pressure and determining the position of said feeding wings, saidcontrol disc has a guiding groove, a guide bolt and a spring-biasedspring bolt extending into said guiding groove, said spring-biasedspring bolt supporting itself on said control disc by means of anoblique deviation face, and means, provided in said pump housing, forsetting from the outside a radial pressure effective on said controldisc by means of said spring bolt.
 2. The feeding device, as set forthin claim 1, which includes means for transmitting the force of asetscrew onto said spring bolt by means of an oblique deviation face,and a pressure spring is inserted into the path of said force andloading said control disc in radial direction.
 3. The feeding device, asset forth in claim 2, wherein said pressure spring supports itself onsaid pump housing, and serves for adjusting of said spring bolt uponrelease of said pressure setting means.